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Scr replacement on 2018 granite

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Has anyone had to replace scr system on new truck due to code P20EE  with only 39k miles? 

 

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THanks any other issues afterwards? 

 

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P20EE is a NOX code which could be caused many different things. We have not seen this code here with our  17/18 common rail engines but have seen it on older trucks. Anything from EGR, turbo, injector to the DPF or SCR "hot box" could be the cause. There is a bulletin on it but mostly goes over making sure you do the tests correctly and not skipping steps  and what info gets reported to Tech Support for review.

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New bulletin released last week on the 20EE code on the common rail engines. Very detailed info. Hopefully they got yours figured out.

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We have replaces a few SCR assemblies on that code as well. E case made the calls on those. Also had one that was an output nox sensor that would be about 75 ppm drift from the other sensor on cool down. Should be 40ppm or less

Only seeing this issue on the 2018s so far.

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Posted (edited)

We have been lucky down here with  our common rail engines , other than software and PM sensors we have had zero issues. Hopefully it stays that way! 

Edited by Mackpro

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Posted (edited)

Just got our 5th P20EE in the last 2 weeks. All 2018 trucks with the stand up SCR unit mounted behind the cab.

$7K to replace the SCR unit up here. The E case was 1 small paragraph description of the results of the testing.

The E case response was 1 sentence...replace the SCR cat. 

Must be a bad batch. 

Edited by bbigrig

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